Experimental Investigation of the Influence of Cellulose Ether on the Floating of Rubber Particles in Mortar

Table 8

Variance analysis of uniformity of mortar.

Source of variation	Sum of squares	Degree of freedom	Mean square	Partial correlation	Specific value	Level of significance
X1	0.8168	1	0.8168	0.8046	18.3604	0.0016
X2	0.3332	1	0.3332	−0.6544	7.4889	0.021
	0.1984	1	0.1984	−0.5554	4.4609	0.0608
	0.0612	1	0.0612	−0.3479	1.3768	0.2678
X1X2	0.0025	1	0.0025	−0.0748	0.0562	0.8174
Regression	1.4121	5	0.2824	F2 = 6.34863		0.0273
Residue	0.4449	10	0.0445
Lack of fit	0.2793	3	0.0931	F1 = 3.93676		0.0431
Error	0.1656	7	0.0237
Sum	1.857	15